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02 Dec 2012  

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10

The problem is that you appear to have reinstalled using Retail media - which requires that you use the Product Key from the COA sticker on the machine's case

If you can read the Key, change the installed one to that using the Change Product Key link at teh bottom of the System properties page.

If you can't read teh Key, you'll have to acquire a set of Recovery media for your machine from teh manufacturer, and use that to reinstall the OS.
My System SpecsSystem Spec